package com.ls.springcloud.controller;

import com.ls.springcloud.entities.CommonResult;
import com.ls.springcloud.entities.Payment;
import com.ls.springcloud.lb.MyLoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @Author Moro
 * @Date 2021/6/2 22:49
 * @title OrderController
 */
@RestController
@Slf4j
public class OrderController {
    //    public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Autowired
    private RestTemplate restTemplate;

    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(@RequestBody Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/creat", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult getPayment(@PathVariable Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class, id);
    }

    @Autowired
    private MyLoadBalancer myLoadBalancer;

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        //判断服务是否有效
        if (instances == null || instances.size() <= 0) {
            return null;
        }
        ServiceInstance serviceInstance = myLoadBalancer.instances(instances);
        URI uri = serviceInstance.getUri();

        return restTemplate.getForObject(uri + "/payment/lb", String.class);

    }

}
